Textbook Notes (369,067)
Canada (162,366)
Psychology (1,899)
PSY290H5 (64)
Chapter 2

Chapter 2 Notes.docx

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Department
Psychology
Course Code
PSY290H5
Professor
Ayesha Khan

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Chapter 2 Notes Neuraxis – dividing line; splits into left and right Proximal – towards the body Lateral – to the side The bone is enclosing the entire central nervous system In a baby, you can feel pulsations occurring in the head because the bone has not configured Prior to 18 months, brain damage can be very dangerous Interlocking bones Neurons are not able to regenerate so we need this extra protection The spine is broken up into various divisions Meninges – assisting in protection CSF – security from physical assault Giving your brain cells sugar so they can function Artery – takes oxygenated blood to the rest of the body Carotid arteries - from the side of the neck Vertebral arteries – from the back of the head Subarachnoid space – space underneath the arachnoid layer Veins – take blood back to the heart to get oxygenated Dura mater and pia mater cover the nerves Cerebrospinal fluid – contains lots of nutrients and is circulating within the ventricles and the subarachnoid space Brain is suspended in the skull Subarachnoid space – prevention from shock 4 ventricles: 1 and 2 are lateral ventricles Brain is relying on nutrients being pumped in by the heart Vertebral artery – joins an arterial system (a bunch of arteries that are all over the brain) Cerebro – referring to the brain Vascular – blood supply Stroke – blood supply disruption to the brain Complete damage, relative damage Cerebral Ischemia – deprivation of oxygen’lack of blood supply to particular region of brain or the entire brain Spontaneous lesions can occur Thrombosis – blood clot, can block passage of blood ; can form in cerebral blood vessel Embolism – a blood clot that can travel to another part of the body Hemorrhage – bursting of a blood vessel Aneurysm – pressure point; represents a weak spot Any of these things can result in a stroke Drugs are blood thinners (which have their own side effects) Usually a letter and number associated with the spinal cord bones White matter represents axons (covered by fatty tissue which is whi
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